Walter marsh jackson



(No Model.)- v

' M JACKSON.

GAS BURNER TIP. N0. 36],161. Patented AprQlZ, 1887.

- I/Vl/E/VTOI? WITNESSES a m- I iii 7 Afforney m lllhognphen wmim u q.

' UNITED STATES PATENT OFFICE.

WALTER MARSH J AOKSON NEW YORK, N. Y. ASSIGNOR T THE GAS CON- SUMERS BENEFIT COMPANY OF THE UNITED STATES, OF SAME PLACE.

GAS-BURNER TI'P.

SPECIFICATION forming part'of Letters Patent No. 361,161, dated April 12, 1887.

Application filed August 4, 1886.

To all whom it may concern:

tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in gas tips or outlets for gas; and it'consists in certain features of construction and combinations of parts, as will be hereinafter described, and pointed out'in theclaim.

In the accompanying drawings, Figure l is a vertical central section of the tip or outlet complete. Fig. 2 is a vertical central section of the same, the three parts being slightly separated. Fig. 3 is a top plan View of the apex of a tip or outlet, showing a simple slot; and Figs. 4, 5, and 6 show the apices of tips or outlets having compound or semi-crosscut slots.

The tip oroutlet is constructed of three pieces of sheet-iron or steel, (lettered a, b, and 0, re-

I spectively.)

The letter (0 represents the crown or apex of the tip, constructed larger at the base than at the top, and necessarily so when pressed or drawn into shape, because the metal refuses to be drawn straight, or nearly so, without cracking, and the die refuses to leave the cavity of the piece unless it be given free return passage. The base of the piece a is provided with ashort flange turned outwardly. Another advantage of the conical shape of the piece a is found in the ability of the slot-cutting die to enter the cavity through a free opening, and not to commence cutting until the desired point is reached. This piece a is struck clean by one blow of the die from a circular blank, and the slot subsequently out by a suitable die being driven into its cavity and cutting from within out.

The letter 11 represents a piece also created by one blow of the die from a circular blank, and consists of a raised projection flat across its top, with inclined sides terminating in an outwardly-extending-flange, the flat top being perforated by a hole, '70, to permit the gas to escape from the lower chamber of the tip into Serial No. 209,995. No model.)

the upper. The perforation through its flat top may be made of any suit-able size to permit a fixed quantity of gas to pass under a uniform pressure, and thus insure a relative standard of emerging pressure through the slot in the piece a. The piece I) fits the inside of the piece a, and when placed in position the flat top of the piece b forms the chambered head (Z in piece a, the surface or flat head reaching to the base of the slot in piece a.

The letter 0 represents the third piece of the tip, and is an inverted truncated hollow cone having a flat oflset around its larger end and an upwardly-extending flange, the inclined sides forming an accommodating joint for engagement with the inside of an ordinary pillar. The piece b is placed inside the piece a, the two flanges in contact, and both are placed upon the inside surface of the flat offset on the piece 0. The associated parts are then placed in a closing swage or die, and the upwardlyextending flange on the piece 0 is closed over and upon the upper side of the flange on the piece a, thus locking the parts securely together.

Figs. 4, 5, and 6 illustrate sen1i-intersecting slots cut in the same manner as in the case of the simple continuous slot, leaving a solid center at the extreme top of the dome of the piece a, the object of the solid center being to preserve symmetry in the form of the flame and prevent the gas from shooting higher in the center, which would be the case if the slots actually crosscut each other.

It is obvious that my tip may be made of other sheet metals or alloys of metals than iron or steel, and hence I do not wish to limit myself to iron or steel in all forms of construction. It is also evident that modifications of my invention other than those shown may be employed-such, for instance, as doing away with the outwardly-extending flange on the piece I), and so constructing the flat offset on the piece 0 that the sharp edge of the piece It will rest directly upon it. Thus only the two flanges would be closed together instead of three, while the piece I) would be securely held in place.

I do not deem it necessary in this application to consider at length the advantages of a sheet-metal tip or sheet-iron or steel tip over those east from metal or molded from clay, as such consideration is amply set forth in my application for patent filed June 9, 1886, Serial No. 204,636, entitled gas-tips.

I am aware that prior patents show burnertips in which a perforated diaphragm is located in the pillar of the burner and at a considerable distance below the head of the tip, thereby forming a gaschamber of the tip and pillar, and hence I make no claim to such construction and arrangement of parts. In my improved tip I employ a substantially hemispherical excavated or chambered head as a part of my tip, the head being provided with one or more slots, as hereinbefore described. Within the chambered or excavated head is placed a cup-shaped section or diaphragm, which is formed with a perforated and flattened top which extends upwardly within the chambered head, and is located in practically the same plane as the lower ends of the flameslot in the chambered head. By this construction and arrangement of the perforated diaphragm or cup-shaped section within the chambered head a substantially hemispherical gas chamber or receptacle is formed within the extreme upper end of the head, the diaphragm forming the floor thereof in the plane of a chord subtending the are of the flame-slot. As

the gas issues from the opening K in the per- 30 forated diaphragm it impinges agai nst the converging surfaces of the inner wall of the tiphead, which operates to deflect the flow against the flattened upper surface of the diaphragm, causing the gas to flow uniformly toward and through the flame-slot in radial lines in all directions within the boundaries of the flameslot.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a gas-burner, the combination, with a chambered head provided with a flame-slot, of a perforated diaphragm or cup-section located within the chambered head, the upper portion of the diaphragm being flattened and situated in practically the same plane as the lower ends of the flame-slot, thereby forming a substantially hemispherical gas-chamber within the upper end of the chambered head, subp stantially as set forth. 7

In testimony whereof I have signed this specification in the presence of two subscribing witnesses. v

\VALTER MARSH JACKSON.

Vitnesses:

GEo. T. GADEN, GEO. M. \VARD. 

